Spectral Efficiency Analysis of Cell-Free Massive MIMO Systems With Zero-Forcing Detector
Spectral Efficiency Analysis of Cell-Free Massive MIMO Systems With Zero-Forcing Detector
In this paper, we firstly derive two approximations of the achievable uplink rate with the perfect/imperfect channel state information (CSI) in cell-free massive multi-input multi-output (MIMO) systems, and all these approximations are not only in the simple, but also converge into the classical bounds achieved in conventional massive MIMO systems …